I'm working with Ruby on Rails and trying to send emails for my application via sendgrid. I'm using sendgrid-ruby version 6.6.2. Everthing working fine and all the personalizations are being added perfectly, so the email subject. But when email is received, subject is missing from the email. I tried using
personalization.subject = 'Hello from your manager' to add subject in personalization.
I also tried adding subject in mail object like
sendgrid_mail = SendGrid::Mail.new
sendgrid_mail.subject = 'Welcome from your manager
Subject is there with sendgrid-mail object before its triggered. But missing when i receive the email.